Top Chinese tennis officials criticized mediocre performances from Chinese women's tennis players who lost their singles and doubles semifinals in the Asian Games on Tuesday.

"There is nothing wrong their techniques and experience," said furious Chinese tennis chief Sun Jinfang. "But it's terribly wrong with their minds."

Top-seeded Chinese Li Na, the top-ranked Asian as world No. 21 and the first Chinese to reach Wimbledon quarterfinals, lost to Sania Mirza of India 6-2, 6-2 in the women's singles semifinals after belting out 27 unforced errors.

China's Olympic champions Li Ting and Sun Tiantian lost their doubles semifinal to Chan Yung Jan and Chuang Chia Jung from Chinese Taipei in a score of 6-3, 6-2.

"They (Li Na, Li Ting/Sun Tiantian) are absolutely strong enough to win gold medals. But they haven't reached a level of professionalism on which they are supported to be," said Sun, director of the Chinese tennis administrative center.

"It's normal to make mistakes and lag behind in the competition. But as professional players, you should never just give up. It doesn't matter if you lose a game. It matters a lot if you lose the spirit of fighting.

"You should keep level-headed when you enter a game. World rankings don't mean anything. You have face the challenge from lower-ranked but hard-fighting rivals. These (Chinese) players are chokers when pressure is mounting."

Chinese women's team head coach Jiang Hongwei admitted he was bitter about the losses, saying Chinese players were "fragile" and "irresponsible."

China now pins its tennis hope on Zheng Jie, who beat Japan's Aiko Nakamura 6-3, 6-2 to reach the women's singles final and combined with Yan Zi to down Japanese pair Ryoko Fuda and Tomoko Yonemura 6-2, 6-2 in the doubles semifinals.